Home / 8,688.96-13,033.26-2,115.18

Finding the Fourth Proportional to 8,688.96, 13,033.26 and 2,115.18

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Solution

The fourth proportional to 8,688.96, 13,033.26 and 2,115.18 is: 3,172.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.96 : 13,033.26 = 2,115.18 : x
  2. Step 2: Convert to fraction form
    8,688.96/13,033.26 = 2,115.18/x
  3. Step 3: Cross multiply
    8,688.96x = 13,033.26 × 2,115.18
  4. Step 4: Simplify right side
    8,688.96x = 27,567,690.89
  5. Step 5: Solve for x
    x = 27,567,690.89/8,688.96
  6. Step 6: Final answer
    x = 3,172.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.